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You're reading from  Kubernetes for Developers

Product typeBook
Published inApr 2018
Reading LevelIntermediate
PublisherPackt
ISBN-139781788834759
Edition1st Edition
Languages
JavaScript
Tools
Kubernetes
Concepts
Containerization
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Author (1)
Joseph Heck
Joseph Heck
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Joseph Heck

Joseph Heck has broad development and management experience across start-ups and large companies. He has architected, developed, and deployed a wide variety of solutions, ranging from mobile and desktop applications to cloud-based distributed systems. He builds and directs teams and mentors individuals to improve the way they build, validate, deploy, and run software. He also works extensively with and in open source, collaborating across many projects, including Kubernetes.
Read more about Joseph Heck

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Built-in metrics with Kubernetes

Kubernetes comes built in with some basic instrumentation to know how much CPU and memory are consumed on each node in the cluster. Exactly what is captured and how it is captured has been evolving rapidly in recent Kubernetes releases (1.5 through 1.9). Many Kubernetes installations will be capturing information about what resources the underlying containers are using with a program called cAdvisor. This code was created by Google to collect, aggregate, and expose the metrics of how containers are operating, as a critical step of being able to know where best to place new containers, based on what resources a node has and where resources are available.

Every node within a Kubernetes cluster will have cAdvisor running and collecting information, and this, in turn, is captured and used by kubelet, which is the local agent on every node that is responsible for starting, stopping, and managing the various resources needed to run containers.

cAdvisor exposes a...

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Kubernetes for Developers
Published in: Apr 2018Publisher: PacktISBN-13: 9781788834759
© 2018 Packt Publishing Limited All Rights Reserved

Author (1)

author image
Joseph Heck

Joseph Heck has broad development and management experience across start-ups and large companies. He has architected, developed, and deployed a wide variety of solutions, ranging from mobile and desktop applications to cloud-based distributed systems. He builds and directs teams and mentors individuals to improve the way they build, validate, deploy, and run software. He also works extensively with and in open source, collaborating across many projects, including Kubernetes.
Read more about Joseph Heck

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